To process incoming e-mail, you have to use filters .
From any browser, point to
WebMail
Processing incoming e-mail via filters in EECS webmail

Login to your webmail https://mail.eecs.yorku.ca account.
Click the “Filters” icon on the toolbar to goto the “Filters Rules” page.
Click the “New Rule” icon to add a new rule.
For online help, click the “Help” icon on the toolbar.